Exit desktop windowing transition (c715ed18) · Commits · e / os / android_frameworks_base

core/java/android/window/flags/DesktopModeFlags.java

+2 −1

Original line number	Diff line number	Diff line
		@@ -64,7 +64,8 @@ public enum DesktopModeFlags {
		ENABLE_WINDOWING_EDGE_DRAG_RESIZE(Flags::enableWindowingEdgeDragResize, true),
		ENABLE_DESKTOP_WINDOWING_TASKBAR_RUNNING_APPS(
		Flags::enableDesktopWindowingTaskbarRunningApps, true),
		ENABLE_DESKTOP_WINDOWING_TRANSITIONS(Flags::enableDesktopWindowingTransitions, false);
		ENABLE_DESKTOP_WINDOWING_TRANSITIONS(Flags::enableDesktopWindowingTransitions, false),
		ENABLE_DESKTOP_WINDOWING_EXIT_TRANSITIONS(Flags::enableDesktopWindowingExitTransitions, false);

		private static final String TAG = "DesktopModeFlagsUtil";
		// Function called to obtain aconfig flag value.

libs/WindowManager/Shell/Android.bp

+1 −0

Original line number	Diff line number	Diff line
		@@ -220,6 +220,7 @@ android_library {
		"//frameworks/libs/systemui:com_android_systemui_shared_flags_lib",
		"//frameworks/libs/systemui:iconloader_base",
		"com_android_wm_shell_flags_lib",
		"PlatformAnimationLib",
		"WindowManager-Shell-proto",
		"WindowManager-Shell-lite-proto",
		"WindowManager-Shell-shared",

libs/WindowManager/Shell/src/com/android/wm/shell/dagger/WMShellModule.java

+67 −17

Original line number	Diff line number	Diff line
		@@ -16,6 +16,7 @@

		package com.android.wm.shell.dagger;

		import static android.window.flags.DesktopModeFlags.ENABLE_DESKTOP_WINDOWING_EXIT_TRANSITIONS;
		import static android.window.flags.DesktopModeFlags.ENABLE_DESKTOP_WINDOWING_TASK_LIMIT;

		import android.annotation.Nullable;
		@@ -59,8 +60,10 @@ import com.android.wm.shell.common.SyncTransactionQueue;
		import com.android.wm.shell.common.TaskStackListenerImpl;
		import com.android.wm.shell.dagger.back.ShellBackAnimationModule;
		import com.android.wm.shell.dagger.pip.PipModule;
		import com.android.wm.shell.desktopmode.CloseDesktopTaskTransitionHandler;
		import com.android.wm.shell.desktopmode.DefaultDragToDesktopTransitionHandler;
		import com.android.wm.shell.desktopmode.DesktopActivityOrientationChangeHandler;
		import com.android.wm.shell.desktopmode.DesktopMixedTransitionHandler;
		import com.android.wm.shell.desktopmode.DesktopModeDragAndDropTransitionHandler;
		import com.android.wm.shell.desktopmode.DesktopModeEventLogger;
		import com.android.wm.shell.desktopmode.DesktopModeLoggerTransitionObserver;
		@@ -85,6 +88,8 @@ import com.android.wm.shell.freeform.FreeformComponents;
		import com.android.wm.shell.freeform.FreeformTaskListener;
		import com.android.wm.shell.freeform.FreeformTaskTransitionHandler;
		import com.android.wm.shell.freeform.FreeformTaskTransitionObserver;
		import com.android.wm.shell.freeform.FreeformTaskTransitionStarter;
		import com.android.wm.shell.freeform.FreeformTaskTransitionStarterInitializer;
		import com.android.wm.shell.keyguard.KeyguardTransitionHandler;
		import com.android.wm.shell.onehanded.OneHandedController;
		import com.android.wm.shell.pip.PipTransitionController;
		@@ -317,9 +322,13 @@ public abstract class WMShellModule {
		static FreeformComponents provideFreeformComponents(
		FreeformTaskListener taskListener,
		FreeformTaskTransitionHandler transitionHandler,
		FreeformTaskTransitionObserver transitionObserver) {
		FreeformTaskTransitionObserver transitionObserver,
		FreeformTaskTransitionStarterInitializer transitionStarterInitializer) {
		return new FreeformComponents(
		taskListener, Optional.of(transitionHandler), Optional.of(transitionObserver));
		taskListener,
		Optional.of(transitionHandler),
		Optional.of(transitionObserver),
		Optional.of(transitionStarterInitializer));
		}

		@WMSingleton
		@@ -343,27 +352,15 @@ public abstract class WMShellModule {
		@WMSingleton
		@Provides
		static FreeformTaskTransitionHandler provideFreeformTaskTransitionHandler(
		ShellInit shellInit,
		Transitions transitions,
		Context context,
		WindowDecorViewModel windowDecorViewModel,
		DisplayController displayController,
		@ShellMainThread ShellExecutor mainExecutor,
		@ShellAnimationThread ShellExecutor animExecutor,
		@DynamicOverride DesktopModeTaskRepository desktopModeTaskRepository,
		InteractionJankMonitor interactionJankMonitor,
		@ShellMainThread Handler handler) {
		@ShellAnimationThread ShellExecutor animExecutor) {
		return new FreeformTaskTransitionHandler(
		shellInit,
		transitions,
		context,
		windowDecorViewModel,
		displayController,
		mainExecutor,
		animExecutor,
		desktopModeTaskRepository,
		interactionJankMonitor,
		handler);
		animExecutor);
		}

		@WMSingleton
		@@ -377,6 +374,23 @@ public abstract class WMShellModule {
		context, shellInit, transitions, windowDecorViewModel);
		}

		@WMSingleton
		@Provides
		static FreeformTaskTransitionStarterInitializer provideFreeformTaskTransitionStarterInitializer(
		ShellInit shellInit,
		WindowDecorViewModel windowDecorViewModel,
		FreeformTaskTransitionHandler freeformTaskTransitionHandler,
		Optional<DesktopMixedTransitionHandler> desktopMixedTransitionHandler) {
		FreeformTaskTransitionStarter transitionStarter;
		if (desktopMixedTransitionHandler.isPresent()) {
		transitionStarter = desktopMixedTransitionHandler.get();
		} else {
		transitionStarter = freeformTaskTransitionHandler;
		}
		return new FreeformTaskTransitionStarterInitializer(shellInit, windowDecorViewModel,
		transitionStarter);
		}

		//
		// One handed mode
		//
		@@ -689,6 +703,16 @@ public abstract class WMShellModule {
		transitions, context, interactionJankMonitor, handler);
		}

		@WMSingleton
		@Provides
		static CloseDesktopTaskTransitionHandler provideCloseDesktopTaskTransitionHandler(
		Context context,
		@ShellMainThread ShellExecutor mainExecutor,
		@ShellAnimationThread ShellExecutor animExecutor
		) {
		return new CloseDesktopTaskTransitionHandler(context, mainExecutor, animExecutor);
		}

		@WMSingleton
		@Provides
		static DesktopModeDragAndDropTransitionHandler provideDesktopModeDragAndDropTransitionHandler(
		@@ -743,6 +767,32 @@ public abstract class WMShellModule {
		);
		}

		@WMSingleton
		@Provides
		static Optional<DesktopMixedTransitionHandler> provideDesktopMixedTransitionHandler(
		Context context,
		Transitions transitions,
		@DynamicOverride DesktopModeTaskRepository desktopModeTaskRepository,
		FreeformTaskTransitionHandler freeformTaskTransitionHandler,
		CloseDesktopTaskTransitionHandler closeDesktopTaskTransitionHandler,
		InteractionJankMonitor interactionJankMonitor,
		@ShellMainThread Handler handler
		) {
		if (!DesktopModeStatus.canEnterDesktopMode(context)
		\|\| !ENABLE_DESKTOP_WINDOWING_EXIT_TRANSITIONS.isTrue()) {
		return Optional.empty();
		}
		return Optional.of(
		new DesktopMixedTransitionHandler(
		context,
		transitions,
		desktopModeTaskRepository,
		freeformTaskTransitionHandler,
		closeDesktopTaskTransitionHandler,
		interactionJankMonitor,
		handler));
		}

		@WMSingleton
		@Provides
		static DesktopModeLoggerTransitionObserver provideDesktopModeLoggerTransitionObserver(

libs/WindowManager/Shell/src/com/android/wm/shell/desktopmode/CloseDesktopTaskTransitionHandler.kt

0 → 100644

+153 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2024 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package com.android.wm.shell.desktopmode

		import android.animation.Animator
		import android.animation.AnimatorSet
		import android.animation.RectEvaluator
		import android.animation.ValueAnimator
		import android.app.WindowConfiguration.WINDOWING_MODE_FREEFORM
		import android.content.Context
		import android.graphics.Rect
		import android.os.IBinder
		import android.util.TypedValue
		import android.view.SurfaceControl.Transaction
		import android.view.WindowManager
		import android.window.TransitionInfo
		import android.window.TransitionRequestInfo
		import android.window.WindowContainerTransaction
		import androidx.core.animation.addListener
		import com.android.app.animation.Interpolators
		import com.android.wm.shell.common.ShellExecutor
		import com.android.wm.shell.transition.Transitions
		import java.util.function.Supplier

		/** The [Transitions.TransitionHandler] that handles transitions for closing desktop mode tasks. */
		class CloseDesktopTaskTransitionHandler
		@JvmOverloads
		constructor(
		private val context: Context,
		private val mainExecutor: ShellExecutor,
		private val animExecutor: ShellExecutor,
		private val transactionSupplier: Supplier<Transaction> = Supplier { Transaction() },
		) : Transitions.TransitionHandler {

		private val runningAnimations = mutableMapOf<IBinder, List<Animator>>()

		/** Returns null, as it only handles transitions started from Shell. */
		override fun handleRequest(
		transition: IBinder,
		request: TransitionRequestInfo,
		): WindowContainerTransaction? = null

		override fun startAnimation(
		transition: IBinder,
		info: TransitionInfo,
		startTransaction: Transaction,
		finishTransaction: Transaction,
		finishCallback: Transitions.TransitionFinishCallback,
		): Boolean {
		if (info.type != WindowManager.TRANSIT_CLOSE) return false
		val animations = mutableListOf<Animator>()
		val onAnimFinish: (Animator) -> Unit = { animator ->
		mainExecutor.execute {
		// Animation completed
		animations.remove(animator)
		if (animations.isEmpty()) {
		// All animations completed, finish the transition
		runningAnimations.remove(transition)
		finishCallback.onTransitionFinished(/* wct= */ null)
		}
		}
		}
		animations +=
		info.changes
		.filter {
		it.mode == WindowManager.TRANSIT_CLOSE &&
		it.taskInfo?.windowingMode == WINDOWING_MODE_FREEFORM
		}
		.map { createCloseAnimation(it, finishTransaction, onAnimFinish) }
		if (animations.isEmpty()) return false
		runningAnimations[transition] = animations
		animExecutor.execute { animations.forEach(Animator::start) }
		return true
		}

		private fun createCloseAnimation(
		change: TransitionInfo.Change,
		finishTransaction: Transaction,
		onAnimFinish: (Animator) -> Unit,
		): Animator {
		finishTransaction.hide(change.leash)
		return AnimatorSet().apply {
		playTogether(createBoundsCloseAnimation(change), createAlphaCloseAnimation(change))
		addListener(onEnd = onAnimFinish)
		}
		}

		private fun createBoundsCloseAnimation(change: TransitionInfo.Change): Animator {
		val startBounds = change.startAbsBounds
		val endBounds =
		Rect(startBounds).apply {
		// Scale the end bounds of the window down with an anchor in the center
		inset(
		(startBounds.width().toFloat() * (1 - CLOSE_ANIM_SCALE) / 2).toInt(),
		(startBounds.height().toFloat() * (1 - CLOSE_ANIM_SCALE) / 2).toInt()
		)
		val offsetY =
		TypedValue.applyDimension(
		TypedValue.COMPLEX_UNIT_DIP,
		CLOSE_ANIM_OFFSET_Y,
		context.resources.displayMetrics
		)
		.toInt()
		offset(/* dx= */ 0, offsetY)
		}
		return ValueAnimator.ofObject(RectEvaluator(), startBounds, endBounds).apply {
		duration = CLOSE_ANIM_DURATION_BOUNDS
		interpolator = Interpolators.STANDARD_ACCELERATE
		addUpdateListener { animation ->
		val animBounds = animation.animatedValue as Rect
		val animScale = 1 - (1 - CLOSE_ANIM_SCALE) * animation.animatedFraction
		transactionSupplier
		.get()
		.setPosition(change.leash, animBounds.left.toFloat(), animBounds.top.toFloat())
		.setScale(change.leash, animScale, animScale)
		.apply()
		}
		}
		}

		private fun createAlphaCloseAnimation(change: TransitionInfo.Change): Animator =
		ValueAnimator.ofFloat(1f, 0f).apply {
		duration = CLOSE_ANIM_DURATION_ALPHA
		interpolator = Interpolators.LINEAR
		addUpdateListener { animation ->
		transactionSupplier
		.get()
		.setAlpha(change.leash, animation.animatedValue as Float)
		.apply()
		}
		}

		private companion object {
		const val CLOSE_ANIM_DURATION_BOUNDS = 200L
		const val CLOSE_ANIM_DURATION_ALPHA = 100L
		const val CLOSE_ANIM_SCALE = 0.95f
		const val CLOSE_ANIM_OFFSET_Y = 36.0f
		}
		}

libs/WindowManager/Shell/src/com/android/wm/shell/desktopmode/DesktopMixedTransitionHandler.kt

0 → 100644

+157 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2024 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package com.android.wm.shell.desktopmode

		import android.app.ActivityTaskManager.INVALID_TASK_ID
		import android.app.WindowConfiguration.WINDOWING_MODE_FREEFORM
		import android.content.Context
		import android.os.Handler
		import android.os.IBinder
		import android.view.SurfaceControl
		import android.view.WindowManager
		import android.window.TransitionInfo
		import android.window.TransitionRequestInfo
		import android.window.WindowContainerTransaction
		import com.android.internal.jank.Cuj.CUJ_DESKTOP_MODE_EXIT_MODE_ON_LAST_WINDOW_CLOSE
		import com.android.internal.jank.InteractionJankMonitor
		import com.android.internal.protolog.ProtoLog
		import com.android.wm.shell.freeform.FreeformTaskTransitionHandler
		import com.android.wm.shell.freeform.FreeformTaskTransitionStarter
		import com.android.wm.shell.protolog.ShellProtoLogGroup.WM_SHELL_DESKTOP_MODE
		import com.android.wm.shell.shared.annotations.ShellMainThread
		import com.android.wm.shell.transition.MixedTransitionHandler
		import com.android.wm.shell.transition.Transitions

		/** The [Transitions.TransitionHandler] coordinates transition handlers in desktop windowing. */
		class DesktopMixedTransitionHandler(
		private val context: Context,
		private val transitions: Transitions,
		private val desktopTaskRepository: DesktopModeTaskRepository,
		private val freeformTaskTransitionHandler: FreeformTaskTransitionHandler,
		private val closeDesktopTaskTransitionHandler: CloseDesktopTaskTransitionHandler,
		private val interactionJankMonitor: InteractionJankMonitor,
		@ShellMainThread private val handler: Handler,
		) : MixedTransitionHandler, FreeformTaskTransitionStarter {

		/** Delegates starting transition to [FreeformTaskTransitionHandler]. */
		override fun startWindowingModeTransition(
		targetWindowingMode: Int,
		wct: WindowContainerTransaction?,
		) = freeformTaskTransitionHandler.startWindowingModeTransition(targetWindowingMode, wct)

		/** Delegates starting minimized mode transition to [FreeformTaskTransitionHandler]. */
		override fun startMinimizedModeTransition(wct: WindowContainerTransaction?): IBinder =
		freeformTaskTransitionHandler.startMinimizedModeTransition(wct)

		/** Starts close transition and handles or delegates desktop task close animation. */
		override fun startRemoveTransition(wct: WindowContainerTransaction?) {
		requireNotNull(wct)
		transitions.startTransition(WindowManager.TRANSIT_CLOSE, wct, /* handler= */ this)
		}

		/** Returns null, as it only handles transitions started from Shell. */
		override fun handleRequest(
		transition: IBinder,
		request: TransitionRequestInfo,
		): WindowContainerTransaction? = null

		override fun startAnimation(
		transition: IBinder,
		info: TransitionInfo,
		startTransaction: SurfaceControl.Transaction,
		finishTransaction: SurfaceControl.Transaction,
		finishCallback: Transitions.TransitionFinishCallback,
		): Boolean {
		val closeChange = findCloseDesktopTaskChange(info)
		if (closeChange == null) {
		ProtoLog.w(WM_SHELL_DESKTOP_MODE, "%s: Should have closing desktop task", TAG)
		return false
		}
		if (isLastDesktopTask(closeChange)) {
		// Dispatch close desktop task animation to the default transition handlers.
		return dispatchCloseLastDesktopTaskAnimation(
		transition,
		info,
		closeChange,
		startTransaction,
		finishTransaction,
		finishCallback,
		)
		}
		// Animate close desktop task transition with [CloseDesktopTaskTransitionHandler].
		return closeDesktopTaskTransitionHandler.startAnimation(
		transition,
		info,
		startTransaction,
		finishTransaction,
		finishCallback,
		)
		}

		/**
		* Dispatch close desktop task animation to the default transition handlers. Allows delegating
		* it to Launcher to animate in sync with show Home transition.
		*/
		private fun dispatchCloseLastDesktopTaskAnimation(
		transition: IBinder,
		info: TransitionInfo,
		change: TransitionInfo.Change,
		startTransaction: SurfaceControl.Transaction,
		finishTransaction: SurfaceControl.Transaction,
		finishCallback: Transitions.TransitionFinishCallback,
		): Boolean {
		// Starting the jank trace if closing the last window in desktop mode.
		interactionJankMonitor.begin(
		change.leash,
		context,
		handler,
		CUJ_DESKTOP_MODE_EXIT_MODE_ON_LAST_WINDOW_CLOSE,
		)
		// Dispatch the last desktop task closing animation.
		return transitions.dispatchTransition(
		transition,
		info,
		startTransaction,
		finishTransaction,
		{ wct ->
		// Finish the jank trace when closing the last window in desktop mode.
		interactionJankMonitor.end(CUJ_DESKTOP_MODE_EXIT_MODE_ON_LAST_WINDOW_CLOSE)
		finishCallback.onTransitionFinished(wct)
		},
		/* skip= */ this
		) != null
		}

		private fun isLastDesktopTask(change: TransitionInfo.Change): Boolean =
		change.taskInfo?.let {
		desktopTaskRepository.getActiveNonMinimizedTaskCount(it.displayId) == 1
		} ?: false

		private fun findCloseDesktopTaskChange(info: TransitionInfo): TransitionInfo.Change? {
		if (info.type != WindowManager.TRANSIT_CLOSE) return null
		return info.changes.firstOrNull { change ->
		change.mode == WindowManager.TRANSIT_CLOSE &&
		!change.hasFlags(TransitionInfo.FLAG_IS_WALLPAPER) &&
		change.taskInfo?.taskId != INVALID_TASK_ID &&
		change.taskInfo?.windowingMode == WINDOWING_MODE_FREEFORM
		}
		}

		companion object {
		private const val TAG = "DesktopMixedTransitionHandler"
		}
		}